HITRAN on the Web

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Scope

All users (unregistered and registered) may:

  • Survey the HITRAN database content for a specified spectral range
  • Specify a mixture of vibrational bands for a given HITRAN isotopologue for a selected wavenumber region
  • Specify a gas mixture from a set of built-in standard atmospheric concentration profiles for a selected wavenumber region
  • Visualize a stick intensity diagram of the specified mixture
  • Simulate one of built-in spectral functions (absorption coefficient profile, transmittance, absorption, or radiance) of the mixture spectrum convolved with one of built-in apparatus functions for various physical (temperature, pressure, pathlength) and simulation (intensity cutoff, contour shape, wing length, resolution, etc) conditions
  • Download simulation results in numerical and/or graphical format on user's computer.

Registered users may also:

  • Prepare user defined gas mixtures
  • Save simulation results on the server side
  • Upload user's spectra to the server side and compare them to simulated spectra from HITRAN data

The registration in the system is free. Just click the button "New user" in user logging form and fill in the form that appears.

Usage agreement

Users of the Hitran on the Web Information System agree to reference it in scientific publications, presentations and communications if the system is useful for their investigations.

Requirements

Cookies and javascript should be enabled in your browser for correct functioning of this web application.

Contacts

Other sites of the portal on molecular spectroscopy

News

27 August 2026

Updates (May 2026) of spectral line parameters for water and oxygen molecules are available in the HITRAN data source.

10 March 2026

the 10th International Symposium “Modern Problems of Laser Physics” (MPLP-2026) and International school on laser physics and photonics for young scientists that will be held in Novosibirsk, Russia, on 23-31 August , 2026.

4 March 2026

The 28th International Conference on High Resolution Molecular Spectroscopy will be held in Prague (August 31 – September 4, 2026). Additional details will be published shortly on the dedicated website PRAHA2026.

22 February 2026

The spectral line  parameters correspond to the HITRAN2024 version.

11 January 2026

79th International Symposium on Molecular Spectroscopy will be held  in University of Illinois at Urbana-Champaign, USA from 22 to 26 June, 2026

More news